/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:01:31,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:01:31,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:01:31,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:01:31,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:01:31,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:01:31,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:01:31,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:01:31,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:01:31,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:01:31,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:01:31,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:01:31,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:01:31,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:01:31,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:01:31,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:01:31,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:01:31,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:01:31,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:01:32,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:01:32,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:01:32,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:01:32,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:01:32,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:01:32,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:01:32,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:01:32,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:01:32,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:01:32,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:01:32,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:01:32,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:01:32,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:01:32,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:01:32,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:01:32,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:01:32,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:01:32,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:01:32,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:01:32,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:01:32,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:01:32,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:01:32,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:01:32,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:01:32,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:01:32,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:01:32,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:01:32,089 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:01:32,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:01:32,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:01:32,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:01:32,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:01:32,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:01:32,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:01:32,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:01:32,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:01:32,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:01:32,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:01:32,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:01:32,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:01:32,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:01:32,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:01:32,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:01:32,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:01:32,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:01:32,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:01:32,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:01:32,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:01:32,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:01:32,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:01:32,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:01:32,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:01:32,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:01:32,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:01:32,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:01:32,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:01:32,598 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:01:32,599 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:01:32,600 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-24 17:01:32,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b18a395b/ca29e93a473f4617a277bc7da1765eb2/FLAG34f7fc382 [2020-09-24 17:01:33,232 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:01:33,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-24 17:01:33,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b18a395b/ca29e93a473f4617a277bc7da1765eb2/FLAG34f7fc382 [2020-09-24 17:01:33,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b18a395b/ca29e93a473f4617a277bc7da1765eb2 [2020-09-24 17:01:33,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:01:33,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:01:33,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:01:33,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:01:33,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:01:33,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:01:33" (1/1) ... [2020-09-24 17:01:33,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:33, skipping insertion in model container [2020-09-24 17:01:33,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:01:33" (1/1) ... [2020-09-24 17:01:33,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:01:33,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:01:33,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:01:33,897 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:01:33,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:01:33,933 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:01:33,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:33 WrapperNode [2020-09-24 17:01:33,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:01:33,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:01:33,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:01:33,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:01:33,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:33" (1/1) ... [2020-09-24 17:01:33,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:33" (1/1) ... [2020-09-24 17:01:33,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:33" (1/1) ... [2020-09-24 17:01:33,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:33" (1/1) ... [2020-09-24 17:01:34,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:33" (1/1) ... [2020-09-24 17:01:34,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:33" (1/1) ... [2020-09-24 17:01:34,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:33" (1/1) ... [2020-09-24 17:01:34,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:01:34,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:01:34,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:01:34,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:01:34,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:01:34,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:01:34,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:01:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-09-24 17:01:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-09-24 17:01:34,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:01:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:01:34,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:01:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-09-24 17:01:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-09-24 17:01:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:01:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:01:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:01:34,401 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:01:34,401 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:01:34,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:01:34 BoogieIcfgContainer [2020-09-24 17:01:34,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:01:34,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:01:34,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:01:34,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:01:34,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:01:33" (1/3) ... [2020-09-24 17:01:34,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7166ac0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:01:34, skipping insertion in model container [2020-09-24 17:01:34,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:33" (2/3) ... [2020-09-24 17:01:34,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7166ac0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:01:34, skipping insertion in model container [2020-09-24 17:01:34,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:01:34" (3/3) ... [2020-09-24 17:01:34,444 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-09-24 17:01:34,463 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:01:34,473 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:01:34,496 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:01:34,526 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:01:34,526 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:01:34,526 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:01:34,526 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:01:34,526 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:01:34,527 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:01:34,527 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:01:34,527 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:01:34,549 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-24 17:01:34,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 17:01:34,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:34,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:34,559 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:34,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:34,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1047957633, now seen corresponding path program 1 times [2020-09-24 17:01:34,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:34,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910399163] [2020-09-24 17:01:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:34,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:34,965 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:34,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:01:34,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:34,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-24 17:01:34,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:01:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:01:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:01:34,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:01:35,200 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-09-24 17:01:35,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:35,329 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:35,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:35,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:01:35,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:35,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:01:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:35,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:35,370 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:35,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:01:35,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:35,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 17:01:35,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:01:35,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:35,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:01:35,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:01:35,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910399163] [2020-09-24 17:01:35,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:35,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:01:35,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436673755] [2020-09-24 17:01:35,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:01:35,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:35,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:01:35,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:01:35,510 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 8 states. [2020-09-24 17:01:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:35,809 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-09-24 17:01:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:01:35,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-24 17:01:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:35,830 INFO L225 Difference]: With dead ends: 60 [2020-09-24 17:01:35,830 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 17:01:35,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:01:35,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 17:01:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-24 17:01:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 17:01:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-24 17:01:35,917 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2020-09-24 17:01:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:35,917 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-24 17:01:35,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:01:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-24 17:01:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 17:01:35,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:35,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:35,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:01:35,922 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:35,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:35,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1743555941, now seen corresponding path program 1 times [2020-09-24 17:01:35,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:35,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492298677] [2020-09-24 17:01:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:35,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:36,176 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:36,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 17:01:36,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:36,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 17:01:36,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:36,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:01:36,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:01:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:01:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:36,438 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 12 [2020-09-24 17:01:36,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:36,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:36,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:36,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:01:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:36,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:01:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:36,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:36,478 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:36,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:01:36,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 17:01:36,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:01:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:01:36,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:01:36,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492298677] [2020-09-24 17:01:36,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:36,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:01:36,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917288098] [2020-09-24 17:01:36,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:01:36,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:36,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:01:36,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:01:36,528 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 8 states. [2020-09-24 17:01:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:36,673 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-09-24 17:01:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:01:36,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-24 17:01:36,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:36,675 INFO L225 Difference]: With dead ends: 49 [2020-09-24 17:01:36,675 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 17:01:36,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:01:36,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 17:01:36,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-24 17:01:36,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 17:01:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-24 17:01:36,686 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 21 [2020-09-24 17:01:36,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:36,689 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-24 17:01:36,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:01:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-24 17:01:36,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 17:01:36,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:36,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:36,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:01:36,693 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:36,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:36,694 INFO L82 PathProgramCache]: Analyzing trace with hash 698419476, now seen corresponding path program 1 times [2020-09-24 17:01:36,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:36,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870789595] [2020-09-24 17:01:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:36,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:36,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:37,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:37,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:01:37,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:01:37,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-09-24 17:01:37,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:37,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:37,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 17:01:37,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:01:37,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:37,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:37,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:37,185 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:37,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:37,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:37,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:01:37,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:37,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:37,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:37,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:01:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:37,241 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:37,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 17:01:37,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:37,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 17:01:37,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:37,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:37,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 17:01:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:01:37,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:37,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:37,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:37,290 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:37,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:01:37,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:37,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 17:01:37,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:01:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:01:37,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:01:37,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870789595] [2020-09-24 17:01:37,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:37,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:01:37,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317448342] [2020-09-24 17:01:37,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:01:37,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:37,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:01:37,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:01:37,330 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 5 states. [2020-09-24 17:01:37,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:37,388 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-09-24 17:01:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:01:37,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-24 17:01:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:37,390 INFO L225 Difference]: With dead ends: 61 [2020-09-24 17:01:37,390 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 17:01:37,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:01:37,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 17:01:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-09-24 17:01:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-24 17:01:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-09-24 17:01:37,400 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2020-09-24 17:01:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:37,400 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-09-24 17:01:37,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:01:37,400 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-09-24 17:01:37,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 17:01:37,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:37,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:37,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:01:37,402 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:37,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:37,403 INFO L82 PathProgramCache]: Analyzing trace with hash 735393428, now seen corresponding path program 1 times [2020-09-24 17:01:37,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:37,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011846031] [2020-09-24 17:01:37,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:37,662 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:37,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:01:37,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:37,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-24 17:01:37,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:01:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:01:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:01:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:37,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:37,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:37,860 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:37,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:37,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:01:37,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:37,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:37,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:01:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:37,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:37,912 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:37,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:01:37,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:37,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 17:01:37,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:37,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:01:37,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:37,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:01:37,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:37,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:38,005 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:38,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:01:38,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 17:01:38,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:01:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:01:38,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:01:38,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011846031] [2020-09-24 17:01:38,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:38,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 17:01:38,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872421796] [2020-09-24 17:01:38,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:01:38,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:38,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:01:38,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:01:38,076 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 11 states. [2020-09-24 17:01:38,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:38,335 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-09-24 17:01:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 17:01:38,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-09-24 17:01:38,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:38,339 INFO L225 Difference]: With dead ends: 53 [2020-09-24 17:01:38,339 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 17:01:38,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:01:38,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 17:01:38,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 17:01:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 17:01:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-09-24 17:01:38,355 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 30 [2020-09-24 17:01:38,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:38,359 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-09-24 17:01:38,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:01:38,359 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-09-24 17:01:38,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 17:01:38,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:38,361 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:38,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:01:38,363 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:38,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:38,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1128861445, now seen corresponding path program 1 times [2020-09-24 17:01:38,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:38,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088542768] [2020-09-24 17:01:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:38,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:38,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:38,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:01:38,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:01:38,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-24 17:01:38,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:38,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:38,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 17:01:38,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:01:38,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:38,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:38,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:38,721 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:38,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:38,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:38,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:01:38,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:38,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:38,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:38,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:38,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 17:01:38,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:01:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:38,781 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:38,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 17:01:38,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:38,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 17:01:38,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:01:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:01:38,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:38,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:38,820 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:38,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 17:01:38,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:38,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 17:01:38,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:38,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:38,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 17:01:38,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:01:38,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:38,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:38,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:38,844 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:38,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:01:38,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:38,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:01:38,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:01:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:01:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:01:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:01:38,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088542768] [2020-09-24 17:01:38,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:01:38,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:01:38,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860455167] [2020-09-24 17:01:38,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:01:38,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:38,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:01:38,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:01:38,877 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 5 states. [2020-09-24 17:01:38,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:38,927 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-09-24 17:01:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:01:38,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-24 17:01:38,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:38,928 INFO L225 Difference]: With dead ends: 63 [2020-09-24 17:01:38,928 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 17:01:38,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:01:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 17:01:38,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-24 17:01:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 17:01:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-09-24 17:01:38,936 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 38 [2020-09-24 17:01:38,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:38,936 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-09-24 17:01:38,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:01:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-09-24 17:01:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 17:01:38,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:38,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:38,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:01:38,938 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:38,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:38,939 INFO L82 PathProgramCache]: Analyzing trace with hash -211667235, now seen corresponding path program 1 times [2020-09-24 17:01:38,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:38,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739932541] [2020-09-24 17:01:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:38,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:39,214 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:39,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 17:01:39,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:39,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-24 17:01:39,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 17:01:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:01:39,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 17:01:39,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:39,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:39,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:39,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:39,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:39,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:39,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:01:39,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:39,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:39,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:01:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:39,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:39,462 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:39,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:01:39,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:39,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 17:01:39,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:01:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:01:39,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:39,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:39,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:39,555 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:39,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:01:39,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:39,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:01:39,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:01:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:01:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:39,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:39,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:39,650 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:39,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:01:39,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:39,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:01:39,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:39,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:01:39,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:39,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:01:39,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:39,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 17:01:39,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739932541] [2020-09-24 17:01:39,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:01:39,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 17:01:39,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683196570] [2020-09-24 17:01:39,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 17:01:39,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:39,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 17:01:39,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:01:39,720 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 13 states. [2020-09-24 17:01:40,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:40,109 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-09-24 17:01:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 17:01:40,110 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-09-24 17:01:40,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:40,111 INFO L225 Difference]: With dead ends: 62 [2020-09-24 17:01:40,111 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 17:01:40,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2020-09-24 17:01:40,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 17:01:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-09-24 17:01:40,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 17:01:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-09-24 17:01:40,127 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 39 [2020-09-24 17:01:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:40,127 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-09-24 17:01:40,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 17:01:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-09-24 17:01:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 17:01:40,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:40,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:40,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:01:40,133 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:40,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:40,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1757163992, now seen corresponding path program 1 times [2020-09-24 17:01:40,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:40,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961509812] [2020-09-24 17:01:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:40,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:40,537 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:40,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 17:01:40,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:40,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-09-24 17:01:40,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:40,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 17:01:40,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:01:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 17:01:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:40,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:40,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:40,686 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:40,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:40,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:01:40,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:40,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:40,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:01:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:40,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:40,765 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:40,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:01:40,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:40,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 17:01:40,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 17:01:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:01:40,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:40,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:40,883 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:40,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:01:40,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:40,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 17:01:40,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:01:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:01:40,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:40,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:40,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:40,979 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:40,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:01:40,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:40,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:01:40,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:40,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:01:40,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:40,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:01:40,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:41,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:41,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:41,068 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:41,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:01:41,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:41,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:01:41,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:01:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:01:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 17:01:41,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961509812] [2020-09-24 17:01:41,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:01:41,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 17:01:41,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601575167] [2020-09-24 17:01:41,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 17:01:41,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:41,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 17:01:41,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:01:41,139 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 15 states. [2020-09-24 17:01:41,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:41,667 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-09-24 17:01:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 17:01:41,667 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-09-24 17:01:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:41,669 INFO L225 Difference]: With dead ends: 72 [2020-09-24 17:01:41,669 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 17:01:41,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2020-09-24 17:01:41,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 17:01:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2020-09-24 17:01:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 17:01:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-24 17:01:41,677 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 48 [2020-09-24 17:01:41,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:41,677 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-24 17:01:41,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 17:01:41,678 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-24 17:01:41,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 17:01:41,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:41,680 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:41,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:01:41,680 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:41,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:41,681 INFO L82 PathProgramCache]: Analyzing trace with hash 338577365, now seen corresponding path program 2 times [2020-09-24 17:01:41,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:41,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361256342] [2020-09-24 17:01:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:41,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:42,260 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:42,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:01:42,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-09-24 17:01:42,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 17:01:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:01:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 17:01:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:42,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:42,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:42,379 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:42,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:42,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:42,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:01:42,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:42,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:42,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:42,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:42,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:42,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:01:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:42,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:42,493 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:42,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:01:42,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:42,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 17:01:42,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:42,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:01:42,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:42,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:01:42,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:42,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:42,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:42,638 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:42,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:01:42,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 17:01:42,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:01:42,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:42,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:01:42,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:42,794 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:42,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:01:42,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:42,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 17:01:42,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:01:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:42,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:01:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:42,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:42,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:42,891 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:42,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:01:42,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:42,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 17:01:42,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:42,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:01:42,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:42,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:01:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:42,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:42,963 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:42,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:01:42,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:01:42,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:42,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:01:42,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:42,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:01:42,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 17:01:43,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361256342] [2020-09-24 17:01:43,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:01:43,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 17:01:43,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109509792] [2020-09-24 17:01:43,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 17:01:43,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:43,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 17:01:43,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-24 17:01:43,049 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 17 states. [2020-09-24 17:01:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:43,838 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-09-24 17:01:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 17:01:43,838 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-09-24 17:01:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:43,840 INFO L225 Difference]: With dead ends: 82 [2020-09-24 17:01:43,840 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 17:01:43,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 17:01:43,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 17:01:43,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 58. [2020-09-24 17:01:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 17:01:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-09-24 17:01:43,850 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 57 [2020-09-24 17:01:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:43,850 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-09-24 17:01:43,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 17:01:43,850 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-09-24 17:01:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 17:01:43,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:43,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:43,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:01:43,853 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:43,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1346648732, now seen corresponding path program 2 times [2020-09-24 17:01:43,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:43,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686249728] [2020-09-24 17:01:43,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:43,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:44,582 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:44,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:01:44,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:44,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-09-24 17:01:44,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 17:01:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:01:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 17:01:44,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:44,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:44,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:44,788 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:44,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:44,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:01:44,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:44,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:44,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:01:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:44,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:44,966 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:44,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:01:44,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:44,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 17:01:44,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 17:01:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:44,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 17:01:44,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:45,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:45,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:45,160 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:45,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:01:45,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 17:01:45,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:01:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:01:45,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:45,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:45,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:45,318 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:45,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:01:45,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:45,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 17:01:45,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:01:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:01:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:45,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:45,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:45,437 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:45,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:01:45,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:45,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 17:01:45,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:45,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:01:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:45,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:01:45,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:45,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:45,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:45,542 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:45,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:01:45,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:45,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 17:01:45,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:01:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:01:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:45,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:45,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:45,636 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:45,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:01:45,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:45,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:01:45,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:45,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:01:45,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:45,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:01:45,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-24 17:01:45,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686249728] [2020-09-24 17:01:45,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:01:45,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 17:01:45,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800429000] [2020-09-24 17:01:45,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 17:01:45,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:45,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 17:01:45,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:01:45,724 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 19 states. [2020-09-24 17:01:46,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:46,742 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2020-09-24 17:01:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 17:01:46,742 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 66 [2020-09-24 17:01:46,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:46,744 INFO L225 Difference]: With dead ends: 92 [2020-09-24 17:01:46,745 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 17:01:46,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 17:01:46,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 17:01:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2020-09-24 17:01:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 17:01:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-09-24 17:01:46,754 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 66 [2020-09-24 17:01:46,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:46,754 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-09-24 17:01:46,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 17:01:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-09-24 17:01:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 17:01:46,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:46,756 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:46,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:01:46,756 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:46,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2107047859, now seen corresponding path program 3 times [2020-09-24 17:01:46,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:46,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658296385] [2020-09-24 17:01:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:46,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:47,708 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:47,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 17:01:47,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:47,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 935 [2020-09-24 17:01:47,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 17:01:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:01:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 17:01:47,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:47,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:47,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:47,844 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:47,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:47,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:47,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:01:47,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:47,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:47,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:01:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:47,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,184 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:48,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 17:01:48,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:48,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-24 17:01:48,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 17:01:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 17:01:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:48,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:48,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,366 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:48,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:01:48,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:48,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 17:01:48,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:48,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:01:48,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:48,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 17:01:48,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:48,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:48,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,593 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:48,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:01:48,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:48,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 17:01:48,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:01:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:01:48,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:48,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:48,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,733 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:48,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:01:48,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 17:01:48,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:01:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:01:48,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:48,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:48,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,841 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:48,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:01:48,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:48,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 17:01:48,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:48,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:01:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:01:48,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:48,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:48,942 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:48,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:01:48,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 17:01:48,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:01:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:48,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:01:48,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:49,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:49,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:49,062 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:49,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:01:49,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:49,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:01:49,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:49,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:01:49,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:49,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:01:49,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-24 17:01:49,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658296385] [2020-09-24 17:01:49,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:01:49,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 17:01:49,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429886508] [2020-09-24 17:01:49,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 17:01:49,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:49,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 17:01:49,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-09-24 17:01:49,202 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 22 states. [2020-09-24 17:01:50,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:50,318 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-09-24 17:01:50,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 17:01:50,318 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2020-09-24 17:01:50,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:50,320 INFO L225 Difference]: With dead ends: 102 [2020-09-24 17:01:50,320 INFO L226 Difference]: Without dead ends: 95 [2020-09-24 17:01:50,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=162, Invalid=1730, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 17:01:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-24 17:01:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 68. [2020-09-24 17:01:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 17:01:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2020-09-24 17:01:50,329 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 75 [2020-09-24 17:01:50,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:50,330 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2020-09-24 17:01:50,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 17:01:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2020-09-24 17:01:50,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-24 17:01:50,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:50,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:50,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:01:50,332 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:50,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:50,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1688547104, now seen corresponding path program 3 times [2020-09-24 17:01:50,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:50,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381029569] [2020-09-24 17:01:50,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:50,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:51,527 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:51,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 17:01:51,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:51,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1172 [2020-09-24 17:01:51,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-24 17:01:51,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:01:51,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-24 17:01:51,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:51,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:51,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:51,667 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:51,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:51,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:51,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:01:51,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:51,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:01:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:51,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:52,011 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:52,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 17:01:52,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:52,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-24 17:01:52,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-24 17:01:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 17:01:52,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:52,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:52,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:52,245 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:52,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 17:01:52,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 17:01:52,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 17:01:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 17:01:52,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:52,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:52,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:52,422 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:52,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:01:52,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 17:01:52,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:01:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 17:01:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:52,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:52,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:52,578 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:52,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:01:52,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 17:01:52,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:01:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:01:52,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:52,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:52,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:52,719 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:52,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:01:52,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:52,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 17:01:52,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:01:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:01:52,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:52,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:52,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:52,816 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:52,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:01:52,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:52,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 17:01:52,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:01:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:01:52,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:52,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:52,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:52,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:52,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:01:52,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 17:01:52,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:01:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:01:52,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:53,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:53,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:53,036 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:53,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:01:53,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:53,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:01:53,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:01:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:53,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:01:53,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-24 17:01:53,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381029569] [2020-09-24 17:01:53,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:01:53,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 17:01:53,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185907258] [2020-09-24 17:01:53,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 17:01:53,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:53,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 17:01:53,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-09-24 17:01:53,182 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 24 states. [2020-09-24 17:01:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:54,613 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2020-09-24 17:01:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 17:01:54,613 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 84 [2020-09-24 17:01:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:54,615 INFO L225 Difference]: With dead ends: 112 [2020-09-24 17:01:54,615 INFO L226 Difference]: Without dead ends: 105 [2020-09-24 17:01:54,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=184, Invalid=2168, Unknown=0, NotChecked=0, Total=2352 [2020-09-24 17:01:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-24 17:01:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2020-09-24 17:01:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 17:01:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-09-24 17:01:54,625 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 84 [2020-09-24 17:01:54,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:54,625 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-09-24 17:01:54,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 17:01:54,626 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-09-24 17:01:54,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-24 17:01:54,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:54,627 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:54,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 17:01:54,627 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:54,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:54,628 INFO L82 PathProgramCache]: Analyzing trace with hash -751656891, now seen corresponding path program 4 times [2020-09-24 17:01:54,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:54,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349693674] [2020-09-24 17:01:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:54,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:56,024 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:56,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 17:01:56,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:56,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1381 [2020-09-24 17:01:56,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-24 17:01:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:01:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 17:01:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:56,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:01:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:56,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:56,212 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:56,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:01:56,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:56,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:01:56,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:01:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:01:56,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:56,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:01:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:56,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:56,496 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:56,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 17:01:56,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:56,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-24 17:01:56,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-24 17:01:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 17:01:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:56,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:56,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:56,820 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:56,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 17:01:56,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:56,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 17:01:56,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 17:01:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 17:01:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:56,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:56,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:57,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:57,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 17:01:57,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:57,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-24 17:01:57,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:57,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 17:01:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 17:01:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:57,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:57,330 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:57,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:01:57,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 17:01:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:01:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 17:01:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:57,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:57,523 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:57,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:01:57,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:57,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 17:01:57,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:57,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:01:57,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:57,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:01:57,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:57,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:57,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:57,716 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:57,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:01:57,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:57,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 17:01:57,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:01:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:01:57,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:57,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:57,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:57,885 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:57,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:01:57,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:57,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 17:01:57,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:01:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:01:57,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:01:57,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:58,039 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:58,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:01:58,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:58,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 17:01:58,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:01:58,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:58,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:01:58,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:01:58,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:01:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:01:58,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:01:58,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:01:58,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:01:58,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:01:58,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:01:58,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:01:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:01:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:01:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:01:58,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:01:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 17:01:58,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349693674] [2020-09-24 17:01:58,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:01:58,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 17:01:58,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213400289] [2020-09-24 17:01:58,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 17:01:58,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:01:58,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 17:01:58,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-09-24 17:01:58,453 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 25 states. [2020-09-24 17:01:59,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:01:59,963 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2020-09-24 17:01:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 17:01:59,966 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 93 [2020-09-24 17:01:59,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:01:59,967 INFO L225 Difference]: With dead ends: 122 [2020-09-24 17:01:59,967 INFO L226 Difference]: Without dead ends: 115 [2020-09-24 17:01:59,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=186, Invalid=2570, Unknown=0, NotChecked=0, Total=2756 [2020-09-24 17:01:59,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-24 17:01:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 78. [2020-09-24 17:01:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 17:01:59,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-09-24 17:01:59,976 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 93 [2020-09-24 17:01:59,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:01:59,976 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-09-24 17:01:59,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 17:01:59,976 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-09-24 17:01:59,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-24 17:01:59,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:01:59,978 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:01:59,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 17:01:59,978 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:01:59,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:01:59,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1934265180, now seen corresponding path program 4 times [2020-09-24 17:01:59,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:01:59,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502563419] [2020-09-24 17:01:59,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:01:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:00,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:01,558 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:01,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 17:02:01,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:01,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1563 [2020-09-24 17:02:01,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-09-24 17:02:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:02:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 17:02:01,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:01,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:01,771 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:01,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:02:01,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:01,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:02:01,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:01,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:01,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:01,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:02:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:01,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,101 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:02,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 17:02:02,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:02,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-24 17:02:02,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-09-24 17:02:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 17:02:02,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:02,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:02,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,431 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:02,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 17:02:02,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:02,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-24 17:02:02,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-24 17:02:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:02,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 17:02:02,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:02,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:02,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,655 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:02,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 17:02:02,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:02,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 17:02:02,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 17:02:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 17:02:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:02,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:02,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:02,872 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:02,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 17:02:02,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:02,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 17:02:02,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 17:02:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 17:02:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:02,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:03,041 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:03,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:02:03,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:03,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 17:02:03,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:03,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:02:03,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:03,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 17:02:03,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:03,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:03,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:03,210 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:03,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:02:03,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:03,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 17:02:03,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:03,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:02:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:03,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:02:03,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:03,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:03,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:03,371 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:03,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:02:03,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:03,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 17:02:03,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:02:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:02:03,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:03,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:03,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:03,506 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:03,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:02:03,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:03,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 17:02:03,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:03,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:02:03,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:03,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:02:03,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:03,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:03,637 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:03,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:02:03,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:02:03,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:02:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:02:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:03,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:03,746 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:03,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:02:03,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:03,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:02:03,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:03,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:02:03,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:03,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:03,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-24 17:02:03,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502563419] [2020-09-24 17:02:03,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:02:03,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 17:02:03,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851364563] [2020-09-24 17:02:03,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 17:02:03,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:03,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 17:02:03,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2020-09-24 17:02:03,884 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 27 states. [2020-09-24 17:02:05,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:05,796 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2020-09-24 17:02:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-24 17:02:05,796 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2020-09-24 17:02:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:05,798 INFO L225 Difference]: With dead ends: 132 [2020-09-24 17:02:05,798 INFO L226 Difference]: Without dead ends: 125 [2020-09-24 17:02:05,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 16 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=3101, Unknown=0, NotChecked=0, Total=3306 [2020-09-24 17:02:05,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-24 17:02:05,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 83. [2020-09-24 17:02:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 17:02:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-09-24 17:02:05,807 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 102 [2020-09-24 17:02:05,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:05,807 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-09-24 17:02:05,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 17:02:05,808 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-09-24 17:02:05,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-24 17:02:05,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:05,809 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:05,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 17:02:05,809 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:05,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:05,810 INFO L82 PathProgramCache]: Analyzing trace with hash -390895683, now seen corresponding path program 5 times [2020-09-24 17:02:05,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:05,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134634171] [2020-09-24 17:02:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:05,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:07,565 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:07,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 17:02:07,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1737 [2020-09-24 17:02:07,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-24 17:02:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:02:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 17:02:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:07,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:07,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:07,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:02:07,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:07,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:02:07,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:07,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:07,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:07,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:07,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:07,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:02:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:07,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:08,039 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:08,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-24 17:02:08,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:08,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-24 17:02:08,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-09-24 17:02:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 17:02:08,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:08,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:08,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:08,342 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:08,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 17:02:08,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-24 17:02:08,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-24 17:02:08,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 17:02:08,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:08,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:08,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:08,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:08,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 17:02:08,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-24 17:02:08,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-24 17:02:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 17:02:08,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:08,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:08,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:08,919 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:08,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 17:02:08,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:08,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 17:02:08,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 17:02:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:08,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 17:02:08,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:08,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:09,132 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:09,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 17:02:09,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:09,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 17:02:09,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:09,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 17:02:09,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:09,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 17:02:09,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:09,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:09,306 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:09,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:02:09,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:09,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 17:02:09,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:02:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:09,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 17:02:09,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:09,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:09,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:09,482 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:09,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:02:09,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:09,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 17:02:09,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:09,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:02:09,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:09,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:02:09,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:09,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:09,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:09,634 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:09,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:02:09,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:09,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 17:02:09,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:02:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:09,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:02:09,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:09,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:09,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:09,757 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:09,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:02:09,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:09,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 17:02:09,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:09,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:02:09,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:02:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:09,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:09,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:09,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:09,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:02:09,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:09,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 17:02:09,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:02:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:02:09,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:09,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:10,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:10,023 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:10,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:02:10,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:10,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:02:10,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:10,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:02:10,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:10,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:10,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-09-24 17:02:10,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134634171] [2020-09-24 17:02:10,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:02:10,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 17:02:10,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630507212] [2020-09-24 17:02:10,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 17:02:10,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:10,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 17:02:10,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=756, Unknown=0, NotChecked=0, Total=812 [2020-09-24 17:02:10,245 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 29 states. [2020-09-24 17:02:12,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:12,470 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2020-09-24 17:02:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-24 17:02:12,470 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 111 [2020-09-24 17:02:12,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:12,472 INFO L225 Difference]: With dead ends: 142 [2020-09-24 17:02:12,472 INFO L226 Difference]: Without dead ends: 135 [2020-09-24 17:02:12,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 16 SyntacticMatches, 8 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=224, Invalid=3682, Unknown=0, NotChecked=0, Total=3906 [2020-09-24 17:02:12,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-24 17:02:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 88. [2020-09-24 17:02:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-24 17:02:12,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-09-24 17:02:12,481 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 111 [2020-09-24 17:02:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:12,481 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-09-24 17:02:12,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 17:02:12,482 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-09-24 17:02:12,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-24 17:02:12,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:12,483 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:12,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 17:02:12,484 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:12,484 INFO L82 PathProgramCache]: Analyzing trace with hash 2094114280, now seen corresponding path program 5 times [2020-09-24 17:02:12,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:12,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43983598] [2020-09-24 17:02:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:12,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:14,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:14,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 17:02:14,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:14,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1816 [2020-09-24 17:02:14,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:14,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-09-24 17:02:14,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:02:14,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-24 17:02:14,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:14,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:14,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:14,472 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:14,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:02:14,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:14,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:02:14,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:14,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:14,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:14,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:14,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:14,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:02:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:14,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:14,840 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:14,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 17:02:14,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:14,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-09-24 17:02:14,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:14,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-09-24 17:02:14,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:14,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 17:02:14,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:14,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:14,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:15,470 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:15,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-24 17:02:15,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-09-24 17:02:15,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-09-24 17:02:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 17:02:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:15,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:15,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:15,857 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:15,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 17:02:15,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-24 17:02:15,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-24 17:02:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 17:02:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:15,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:15,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:16,199 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:16,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 17:02:16,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:16,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-24 17:02:16,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:16,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-24 17:02:16,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:16,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 17:02:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:16,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:16,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:16,461 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:16,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 17:02:16,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:16,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-24 17:02:16,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:16,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 17:02:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 17:02:16,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:16,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:16,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:16,678 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:16,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 17:02:16,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 17:02:16,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 17:02:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 17:02:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:16,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:16,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:16,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:16,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:02:16,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:16,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 17:02:16,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:16,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:02:16,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:16,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 17:02:16,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:16,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:17,065 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:17,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:02:17,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 17:02:17,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:02:17,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:17,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 17:02:17,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:17,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:17,234 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:17,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:02:17,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:17,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 17:02:17,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:17,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:02:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:02:17,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:17,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:17,397 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:17,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:02:17,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:17,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 17:02:17,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:02:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 17:02:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:17,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:17,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:17,538 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:17,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 17:02:17,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 17:02:17,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:02:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:02:17,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:17,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:17,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:17,665 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:17,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:02:17,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:02:17,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:02:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:02:17,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:02:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-09-24 17:02:17,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43983598] [2020-09-24 17:02:17,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:02:17,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-24 17:02:17,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640016810] [2020-09-24 17:02:17,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-24 17:02:17,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:02:17,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-24 17:02:17,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2020-09-24 17:02:17,896 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 31 states. [2020-09-24 17:02:20,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:02:20,731 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2020-09-24 17:02:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-24 17:02:20,731 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 120 [2020-09-24 17:02:20,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:02:20,732 INFO L225 Difference]: With dead ends: 152 [2020-09-24 17:02:20,733 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 17:02:20,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=243, Invalid=4313, Unknown=0, NotChecked=0, Total=4556 [2020-09-24 17:02:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 17:02:20,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-24 17:02:20,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 17:02:20,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-09-24 17:02:20,740 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 120 [2020-09-24 17:02:20,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:02:20,740 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-09-24 17:02:20,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-24 17:02:20,741 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-09-24 17:02:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 17:02:20,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:02:20,742 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:02:20,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 17:02:20,743 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:02:20,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:02:20,743 INFO L82 PathProgramCache]: Analyzing trace with hash -501508427, now seen corresponding path program 6 times [2020-09-24 17:02:20,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:02:20,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528872164] [2020-09-24 17:02:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:02:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:20,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:22,960 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:22,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-24 17:02:22,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2195 [2020-09-24 17:02:22,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-09-24 17:02:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:02:22,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-24 17:02:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:23,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:02:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:23,133 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:23,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:02:23,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:02:23,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:02:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:02:23,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:23,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 17:02:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:23,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:02:23,717 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:02:23,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 17:02:23,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:02:23,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-09-24 17:02:23,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:02:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-09-24 17:02:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:02:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 17:02:23,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:02:23,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 17:02:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:02:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking...